Touchscreens consist of more than just sensors and an integrated display. Whether it’s a capacitive, resistive or surface acoustic wave (SAW) touchscreen, it will likely feature a controller.

The controller is an integral part of most touchscreens. Without it, you won’t be able to control a touchscreen. Even if you’re familiar with the different touchscreen technologies, though, you may not be familiar with touchscreen controllers. Here’s everything you need to know about touchscreen controllers and how they work.

What Is a Touchscreen Controller?

A touchscreen controller is a component in a touchscreen that’s designed to translate touch commands into computer-readable electrical signals. It essentially functions as an intermediary between the touchscreen and the computer or device with which the touchscreen is used. Touchscreens themselves are simply interfaces. Most touchscreens are used in conjunction with a computer, such as a tablet or a smartphone. The touchscreen controller sits between the touchscreen and the connected computer or device.

How Touchscreen Controllers Work

Touchscreen controllers consist of circuits. They work by sending and receiving signals. They receive analog signals in the form of touch commands, and they convert them into digital signals. Touchscreen controllers will send these digital signals to the computer or device with which they are used.

When you perform a touch command, you’ll expose the touchscreen to an analog signal. The controller will then convert this analog signal into a digital signal. The touchscreen will then respond to your computer. The computer or device will recognize the location of your touch command, it will respond accordingly.

The Importance of a Touchscreen Controller

Why is a touchscreen controller necessary exactly? Computers and devices can’t interpret analog signals. All touch commands, of course, begin with an analog signal. For a touchscreen to register and respond to your touch commands, these analog signals must be converted into digital signals — and that’s the job of the controller.

The controller allows touchscreens to register and respond to touch commands. It will work automatically to perform the necessary conversions. During use, the controller will convert analog signals into digital signals. It will send the digital signals to the computer or device, thereby allowing for an accurate and responsive touchscreen.

In Conclusion

The controller is an important part of a touchscreen. It acts as an intermediary between the touchscreen itself and the computer or device with which it’s used. The controller will take analog signals and convert them into digital signals.